574874 ÷ 75 
The aim is to understand the frequency of 75 in 574874.

Step 1:
75 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 75

Advancing to step 2:
57 divided by 75 is 0 with a remainder of 57.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 57 to get 57.
Take the next digit (4) from the dividend and append it to 57, then repeat: 574 / 75

Advancing to step 3:
75 can be fit into 574 7 times, resulting in a remainder of 49.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtracting 525 from 574 leaves us with 49.
Grab the next digit (8) from the dividend, add it to 49, then carry on: 498 / 75

On to step 4:
When dividing 498 by 75, we get 6 with a remainder of 48.
Use 6 as the next digit of our solution. 
Result so far: 76.0
Deduct 450 from 498 and we're left with 48.
Bring next digit (7) of the dividend behind the 48 and repeat the process: 487 / 75

Let's proceed to step 5:
If we divide 487 by 75, we get 6 and a remainder of 37.
The next digit of our result is 6. 
Result so far: 766.0
Subtracting 450 from 487 leaves us with 37.
Bring next digit (4) of the dividend behind the 37 and repeat the process: 374 / 75

Let's proceed to step 6:
When dividing 374 by 75, we get 4 with a remainder of 74.
Use 4 as the next digit of our solution. 
Result so far: 7664.0
If we subtract 300 from 374, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Let's proceed to step 7:
75 goes into 740 9 times with a remainder of 65.
Put 9 as the next digit of the answer. 
Result so far: 7664.9
Subtracting 675 from 740 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Step 8:
When dividing 650 by 75, we get 8 with a remainder of 50.
Record the quotient 8 as the next digit in the result. 
Result so far: 7664.98
Subtract 600 from 650 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 9:
If we divide 500 by 75, we get 6 and a remainder of 50.
Write down 6 as next digit of the result. 
Result so far: 7664.986
Subtracting 450 from 500 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 10:
The number 75 fits into 500 6 times, leaving a remainder of 50.
Write down 6 as next digit of the result. 
Result so far: 7664.9866
Subtract 450 from 500 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

After the division, we end up with 7664.9866 and a remainder of 0.0005.